Actually I was going to try doing something similar after seeing how machi processed his Hartley and Neptune animations using morphing but now it has been done for me . It will be interesting to see a version of the animation similar to this one once I'm finished with all 66 frames of the animation (hardly going to happen this year - I'm working on something else). What software did you use?

Well, since Bjorn started with 16 images with the red spot held still, I assumed that meant one image per Jupiter day. Ian's animation is 16 seconds long. So it's running at 1 Jupiter day per second, or 10 Earth hours per second.

I have just finished a completely new mosaic of the Great Red Spot (GRS), this time based on Voyager 2 images. First an enhanced, sharpened version and then a version that should have approximately natural color and contrast:

This is a 5x3 mosaic of images obtained on July 8, 1979 when Voyager 2 was ~1.45 million km from Jupiter. The resolution of the original images is ~14 km/pixel. The resolution of this mosaic is similar. This is a slightly higher resolution than in the Voyager 1 GRS mosaic I posted earlier in this thread. Each of the 15 frames making up the mosaic is a color composite from orange, green and violet images. This results in more accurate color than in my earlier Voyager 1 GRS mosaic because in that case I had no green images I could use. Thanks to this the color variations in this mosaic seem more interesting.

As far as I know this is completely new stuff. Very few and possibly none of the images I used have appeared earlier in official image releases, at least not in color. There is a fairly well known Voyager 2 mosaic of the GRS but that one is composed from images obtained three Jovian rotations earlier at a range of 2.6 million km (see http://photojournal.jpl.nasa.gov/catalog/PIA00065 ). Thanks to modern computers and software the quality of this new mosaic is higher.

As usual the mosaic was created by reprojecting the source data to simple cylindrical projection and then rendering the resulting map using a 'typical' viewing geometry (there is no single correct geometry because the source images were obtained over a period of ~70 minutes).

Thanks among other things to improvements I've made to some of the processing steps required to create these mosaics the geometric accuracy of this mosaic is higher than for the earlier Voyager 1 mosaic.

This new mosaic contains lots of interesting stuff, including small scale details and interesting color variations. Cloud shadows are visible, in particular at (3040,2040) and nearby. The color variations seem more interesting here than in the Voyager 1 mosaic, probably because the color is more accurate. There is an interesting brownish/orange 'band' near (1180,615) for example. Also the color changes from brownish to whitish near (900,1300) without any obvious changes to the 'texture' of the image (the wind is northnortheasterly at this location). I could name at least 10 additional features that look interesting to me and where I wish I knew what was happening.

The Voyager 1 images of Jupiter (and not the least the GRS) are probably better known than the Voyager 2 images, mainly because Voyager 1 arrived earlier. So yet again in a way I feel like I'm looking at images from a new Jupiter flyby. The GRS region looks more 'Galileo-like' to me in the Voyager 2 images than it does in the Voyager 1 images.

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